Kalshi and Polymarket have each added over 270,000 new users per month in the past two years; Polymarket's monthly retention rate exceeds 50%.

According to Odaily, the prediction market data platform Parity posted on X that, from May 2024 to the present, the two major prediction markets, Kalshi and Polymarket, have seen an average of over 273,908 new users per month. In addition, Polymarket's retention rate is remarkable: the monthly retention rate reaches 50.2%, and the three-month retention rate is 30%.

Note: Kalshi's new user data is based on publicly available user data; retention rate data is calculated based solely on Polymarket data.